ArrayManipulator

using System;
using System.Collections.Generic;
using System.Linq;

namespace DeleteThat
{
    class Program
    {
        static void Main(string[] args)
        {
            List<int> numbers = Console.ReadLine()
              .Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries)
              .Select(int.Parse)
              .ToList();
            string[] command = Console.ReadLine()
               .Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries)
               .ToArray();
            while (command[0] != "print")
            {

                switch (command[0])
                {
                    case "add":
                        numbers.Insert(int.Parse(command[1]), int.Parse(command[2]));
                        break;
                    case "addMany":
                        {
                            List<int> collection = command.Skip(2).Select(s => int.Parse(s)).ToList();
                            numbers.InsertRange(int.Parse(command[1]), collection);
                            break;
                        }

                    case "contains":
                        {
                            int index = numbers.IndexOf(int.Parse(command[1]));
                            Console.WriteLine(index);
                            break;
                        }

                    case "remove":
                        numbers.RemoveAt(int.Parse(command[1]));
                        break;
                    case "shift":
                        {
                            //int rotations = int.Parse(command[1]);
                            //while (rotations > 0)
                            //{
                            //    int firstElement = numbers[0];
                            //    numbers.RemoveAt(0);
                            //    numbers.Add(firstElement);
                            //    rotations--;
                            //}
                            if (int.Parse(command[1]) > numbers.Count)
                            {
                                List<int> temp = numbers.Take(int.Parse(command[1]) % numbers.Count).ToList();
                                numbers = numbers.Skip(int.Parse(command[1]) % numbers.Count).ToList();
                                numbers.AddRange(temp);
                            }
                            else
                            {
                                List<int> temp = numbers.Take(int.Parse(command[1])).ToList();
                                numbers = numbers.Skip(int.Parse(command[1])).ToList();
                                numbers.AddRange(temp);
                            }
                            break;

                        }

                    case "sumPairs":
                        {
                            for (int i = 0; i < numbers.Count - 1; i++)
                            {

                                numbers[i] += numbers[i + 1];
                                numbers.RemoveAt(i + 1);

                            }

                            break;
                        }
                }


                command = Console.ReadLine()
               .Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries)
               .ToArray();

            }
            Console.WriteLine($"[{string.Join(", ", numbers)}]");
        }
    }
}